Kerja Sepenuh Masa, Senior Backend Engineer – Java, SQL, AWS - Distributed Systems di Ascendion - Maukerja

Role:

• We are hiring a strong senior backend engineer for a high-impact financial technology platform. This role is ideal for engineers who enjoy solving complex backend, SQL, and distributed systems problems.
• The client is looking for hands-on engineers who can write clean Java code, solve SQL problems, optimise performance, support production systems, and explain their technical decisions clearly.

Responsibilities:

• Design, develop, and maintain backend services using Java, Spring Boot, and microservices architecture.
• Build REST APIs and backend workflows for business-critical applications.
• Write and optimise SQL queries involving joins, aggregations, indexing, and performance tuning.
• Troubleshoot slow queries using execution plans, indexing strategies, and query restructuring.
• Design scalable and extensible Java components using SOLID principles and practical design patterns.
• Work on distributed systems, asynchronous processing, and service integrations.
• Support production issue investigation, root cause analysis, and performance improvements.
• Work with AWS, Docker, Kubernetes, CI/CD pipelines, and monitoring tools.
• Collaborate with product, QA, DevOps, and engineering teams across the SDLC.

Required Skills

• 7+ years of backend software engineering experience.
• Strong hands-on Java experience, preferably Java 8 or above.
• Strong experience with Spring Boot, REST APIs, Hibernate/JPA, and microservices.
• Strong SQL skills with hands-on experience and the ability to write and explain complex SQL queries involving multiple tables.
• Experience with query optimisation, indexing, execution plans, and database performance tuning.
• Good understanding of Java fundamentals, collections, multithreading, exception handling, and object-orientated design.
• Exposure to AWS services such as EC2, S3, RDS, Lambda, CloudWatch, EKS, or similar cloud platforms.
• Experience with Docker, Kubernetes, Jenkins, GitLab CI, GitHub Actions, or similar CI/CD tools.
• Strong communication skills and ability to explain technical decisions clearly.

Preferred Skills:

• Experience in banking, payments, fintech, trading, investment, insurance, or transaction-heavy platforms.
• Experience with Kafka, RabbitMQ, JMS, or event-driven architecture.
• Experience handling production incidents, root cause analysis, and performance bottlenecks.
• Exposure to high-volume systems where reliability, scalability, and data accuracy are critical.

Assessment Process:

• HackerRank assessment covering backend Java and SQL.